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In our Universe, a black hole is bounded by a spherical surface called an event horizon. Whereas in ordinary three-dimensional space it takes a two-dimensional object (a surface) to create a boundary inside a black hole, in the bulk universe the event horizon of a 4D black hole would be a 3D object - a shape called a hypersphere. When Afshordi's team modelled the death of a 4D star, they found that the ejected material would form a 3D brane surrounding that 3D event horizon, and slowly expand. The authors postulate that the 3D Universe we live in might be just such a brane - and that we detect the brane's growth as cosmic expansion. "Astronomers measured that expansion and extrapolated back that the Universe must have begun with a Big Bang - but that is just a mirage," says Afshordi.

The event horizon telescope will only photograph the proximity to the event horizon, not the black hole itself which by definition remains invisible. If it succeeds it will be the first actual proof that black holes exist.

As if they weren't considered beastly enough, black holes can dive into nearby stars and devour them from the inside out, scientists now suggest. Such invasions by such black holes could help explain the most powerful explosions in the universe, gamma-ray bursts, whose origins remain elusive.

The most distant known galaxy to host a supermassive black hole has been discovered in a galaxy that formed in the early history of the universe. The galaxy, as large as the Milky Way, is about 12.8 billion light-years away and harbors a supermassive black hole that contains at least a billion times as much matter as our sun.

A new study found that the earliest black holes lacked nearby matter to gobble up, and so lay relatively stagnant in pockets of emptiness.

"14.06.2013 - Biologie, Geowissenschaften William Orsi (Woods Hole Oceanographic Institution, Woods Hole) et al., Nature, doi: 10.1038/nature12230 Aktives Leben in der Tiefe RNA-Analyse liefert ersten umfassenden Überblick über Aktivität, Ernährung und Bewegungsformen in der tiefen Biosphäre"

A small change to the theory of gravity implies that our universe inherited its arrow of time from the black hole in which it was born.

ientists are claiming a stunning discovery in their quest to fully understand gravity.They have observed the warping of space-time generated by the collision of two black holes more than a billion light-years from Earth.The international team says the first detection of these gravitational waves will usher in a new era

Physicists have created a "hole in time" using the temporal equivalent of an invisibility cloak.

Large Hadron Collider investigative journalism

...evidence shows that healers in Peru practiced trepanation - a surgical procedure that involves removing a section of the cranial vault using a hand drill or a scraping tool - more than 1,000 years ago to treat a variety of ailments, from head injuries to heartsickness.